getFocusedPrimaryTabObjectId()

Returns the object ID of the primary tab on which the browser is focused. This method is only available in API version 25.0 or later.

Name	Type	Description
`callback`	function	JavaScript method that’s called upon completion of the method.

This method is asynchronous, so it returns its response in an object in a callback method. The response object contains the following field:

Name	Type	Description
`id`	string	The object ID of the primary tab on which the browser is focused. If there is no primary tab open, the ID is null.
`success`	boolean	`true` if returning the primary tab object ID on which the browser is focused was successful; `false` if returning the primary tab object ID on which the browser is focused wasn’t successful.